forgot to include header files into automake template
diff --git a/src/Makefile.am b/src/Makefile.am
index 59f7eaa..1a82448 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -291,20 +291,34 @@
google/protobuf/compiler/python/python_generator.cc \
google/protobuf/compiler/ruby/ruby_generator.cc \
google/protobuf/compiler/csharp/csharp_enum.cc \
+ google/protobuf/compiler/csharp/csharp_enum.h \
google/protobuf/compiler/csharp/csharp_enum_field.cc \
+ google/protobuf/compiler/csharp/csharp_enum_field.h \
google/protobuf/compiler/csharp/csharp_extension.cc \
+ google/protobuf/compiler/csharp/csharp_extension.h \
google/protobuf/compiler/csharp/csharp_field_base.cc \
+ google/protobuf/compiler/csharp/csharp_field_base.h \
google/protobuf/compiler/csharp/csharp_generator.cc \
google/protobuf/compiler/csharp/csharp_helpers.cc \
+ google/protobuf/compiler/csharp/csharp_helpers.h \
google/protobuf/compiler/csharp/csharp_message.cc \
+ google/protobuf/compiler/csharp/csharp_message.h \
google/protobuf/compiler/csharp/csharp_message_field.cc \
+ google/protobuf/compiler/csharp/csharp_message_field.h \
google/protobuf/compiler/csharp/csharp_primitive_field.cc \
+ google/protobuf/compiler/csharp/csharp_primitive_field.h \
google/protobuf/compiler/csharp/csharp_repeated_enum_field.cc \
+ google/protobuf/compiler/csharp/csharp_repeated_enum_field.h \
google/protobuf/compiler/csharp/csharp_repeated_message_field.cc \
+ google/protobuf/compiler/csharp/csharp_repeated_message_field.h \
google/protobuf/compiler/csharp/csharp_repeated_primitive_field.cc \
+ google/protobuf/compiler/csharp/csharp_repeated_primitive_field.h \
google/protobuf/compiler/csharp/csharp_source_generator_base.cc \
+ google/protobuf/compiler/csharp/csharp_source_generator_base.h \
google/protobuf/compiler/csharp/csharp_umbrella_class.cc \
- google/protobuf/compiler/csharp/csharp_writer.cc
+ google/protobuf/compiler/csharp/csharp_umbrella_class.h \
+ google/protobuf/compiler/csharp/csharp_writer.cc \
+ google/protobuf/compiler/csharp/csharp_writer.h
bin_PROGRAMS = protoc
protoc_LDADD = $(PTHREAD_LIBS) libprotobuf.la libprotoc.la